Improved hydraulic propeller



. drawings, forming a part of this specification UNITED STATES PATENT OFFICE.

ALBERT PAGENSTEOHE'R, OF VALPARAISO, CHILI.

IMPROVIED HYDRAU LIC EROPELLER.

To all whomit may concern:

Be it known that l, ALBERT PAGENsTEcH- ER, of Valparaiso, in the Republic of Chili,

have invented a new and Improved Propeller;

and I do hereby declare that the following is a full, clear, and exactvdescription of the same, reference being had to the accompanying in which- Figure 1 represents a side elevation of .my invention. Fig. 2 is a sectional plan or top View of the same. Fig.- 3 is a longitudinal lsection of the same. Fig. t is a detached plan 'of one of the rotary pumping-cones.

Similar letters of reference inthe three views indicate corresponding parts.

The object of this invention is to propel a -vessel by the react-ion of a stream of water issuing from an orifice or orifices'above the water-line.

' The invention consists in the employment or use of rotary pumps applied on the sides of the vessel to be propelled in combination with discharge-pipes passing into pipes of a much larger diameter, which take water at the bottom ofthe vessel and discharge at its sides above the water-line in such a manner that the stream of waterissuing from the discharge-pipes acts on the principle of an in'- jector, and a volume of water is expelled from thelarge pipes much exceeding the volume which the pumps alone, unaided by the injectors, would be capable of expelling, and by the reaction of the water thus driven out of said 'pipes with great velocity a power is obtained which will propel a vessel or aid in propelling it with a force which is entirely independent ofthe velocity with which said vessel moves through the water.

The invention further consists in combining with the aforesaid arrangement of .pipes revolving nozzles through which the water is expelled in" such a manner that by turning said nozzlesthe motion of the vessel can bev Vreversed or stopped altogether, without re- Iversing or stopping the engine orl motive power.

To enable those skilled in the art to make and use this invention, l will proceed to describe it.

A represents the hull of a vessel, vconstructed of iron or wood, in the usual manner. This hull is pierced on the opposite sides, about amidships, with two holes, a, to receive the conical barrels` B, which' contain the rotary pumps C. These pumps consist of cones provided on their peripheries rwith a series of spiral flanges, b, which t nicely in the conical barrels, and by imparting to these pumps a rotary motion the water is drawn in through the outer or large ends of the conical barrels and expelled through their small ends. The cones c are secured to the ends of a conical shaft, D, to which 'a rapid rotary motion is imparted by means of a steam-engine or other suitable source of power.

E are the discharge-pipes `which emanate from the small or inner ends of the drum B,

and terminate in pipes F, of a much larger diameter. These pipes-extend down through the bottom of the vessel A, and out at its sides above thewater-line, and they are provided With elbow-nozzles G, connected to them in suchv a manner that they can be easily revolved and turned down or backward or forward by suitable mechanism from the deck of thev vessel.

The large pipes F, being open at both ends, will freely admit the water', which naturally will rise in them to a level with the waterline, and the discharge-pipes E pass into them at points from one and a halt` to four feet above the level of the water. If the pumps begin to operate, and the water rushes out of the discharge-pipes E into the large pipes F, an action takes place similar to that ofthe injector.

The air in the large pipes is rareed, and the y water impelled by the atmospheric pressure ri ses in said pipes and joins the current emanating from the discharge-pipes, anda volume of water is driven out through the nozzles of the large pipes much larger than that which would be due to the unaided vaction of the pumps.

The reaction of the water issuing from the nozzles G propels the vessel in the direction opposite to that in which the water runs from said'nozzles. lf the nozzles point in the di rection of the stern the vessel goes forward, and if the nozzles point toward the bow the vessel goes backward, and by turning the nozzles down in a vertical position, as shown in red outlines in Fig. l, the propelling power ceases to act and the vessel stops. Bymeans of therevolving nozzles the vessel can be turned on its center or pivot, which 1s accomplished by turning one ofl the nozzles toward the stern and the other toward the bow.

The propelling power due to the reaction of the water issu-ing from the 4pipes F is imeas ured by a column of Water, the area of the transverse section of which is equal to the area of the nozzles G, and its height is equal to the double height due to the velocity of the discharging water, and found by the formula p -fi. From this observation 1t 1s obvious thattlie propelling power increases with vthe velocity of the discharging water, and with the areas of the nozzles, andby increasing the number of pumps and nozzles on each side of the'vessel the propelling;- power can be further be. Itis of particular advantage for vessels ofswar, because al its vital parts are below the water-line, and it allows of maneuvering the vessel with the greatest ease and facility.

What I claim as new, and desire to secure by Letters Patent, is-

l. The employment or use of rotary pumps C, applied to avessel, A, in combination with pipes E issuing into large pipes F, and producing an action similar to an injection, in the manner and for the purposes herein described.

2. The combination of the horizontal pumping-conca@ I1 b, conical barrels B, pipes E F, and revolving nozzles G, lall constructed, arranged, and operating substantially as specified..

ALBERT PAGENSTEGHER.

Witnesses:

J. W. CooMBs, GEO. W. REED. 

